Tempco calcs

[jhaible]

> Hmmm... "Platin". Would that be what we call platinum (chemical symbor
> Pt)?

Yes, Pt.

As I mentioned, an 8% series resistance give the proper T
> dependence. Its drawback is its price. I found some 100 Ohm Pt chip
> resistors at www.irctt.com, but they didn't give a price. The 1-2k units
> sold for sensor applications are around $20 or more.

I think I've seen them below DM 10,- (USD 5) in Germany.

JH.